Envelope



May 1, 1923.

A. D. FiELD ENVELOPE 1921 2 Sheets-Sheet 1 Filed Dec. 21

an D. Field fliio'rhq'y r w m M May 1, 1923. 1,453,758

. A. D. FIELD ENVELOPE Filed Bed. 21, 1921 2 Sheets-Sheet 2 Inwenior BAlaM D.Field an, 9, Ma. flitorney Patented May 1, 1923.

c m -mus iara TE T OFFER ALAN 13. FIELD, or oAKLaND, cAL1ronNra,'nssIsN0n rof THEFIELD-ERNST 'nNvELoPE 00., or SAN FRANCISCO, CALIFORNIA, A PARTNERSHIP.

' ENVELOPE.

"- I Application filed December T all whom itmay concern:

Be it known that l, ALAN D.-FIELD, a citi zen of the United States, residing at Oak-' land, in the county of Alameda and State of California, have invented new and useful Improvements in Envelopes, of which the following is a specification.

This invention relates to envelopes, and esvelopes to obtain theadva-ntages of the vary-.

ing rates.

In large concerns where quantitles ofsales letters and accompanying catalogues are mailed out, it must be admitted that considerable time is wasted due to the fact that each envelope must be separately addressed, and 1t is obvious that cost is also increased considerably, due to the separate envelopes required. These features are objectionable but other features of more importance are encountered due to the mall classification or system employed; for instance a sales-letter regarding certain goods may be written and mailed today and a catalogue or other descriptive matter may also be mailed under separate cover. 'As this separate enclosure is handled by the second or third class mail, it seldom reaches the prospective customer with the sales-letter: it being often found cerning the matter atjhand, etc.

that there is several days delay before delivcry of the second class mail, and again, it often happens that the second class mail is lost or miscarried. such delay in delivery is not only an inconvenience. but has often caused loss of big sales as the long wait between the first delivery of the sales-letter and the second delivery of the catalogue or other mail matter causes loss of interest con- For this reason a double compartment or duplex envelope should be of great value as it will not only save paper and cost of material, time in the oflioe where address ng of envelopes is attended to, and it will at least insure simul taneous mailing and dellvery of boththe first and second class mail matter. 1

. The envelope forming the subject matter of the present application relates to a duplex envelope and is designed to permit simulta- 21,1921, Serial No: 523,812.

neous mailing and delivery ofb'oth the first.

and'second class mail; the object being to the character described; to economize in the quantity of paper required during the manufacture of the'envelopes; to reduce the'cost tion of a strong, durable envelope.

Other objects will hereinafter appear. jThe 'inventionconsists of the parts and the construction, combination and arrangement generally improve and simplify envelopes of' of manufacture and'still insure the 'produc-- of parts as hereinafter more fully described 'andclaimed, having reference to the accompanying drawings, in which- 1 side of the envelope.

of the envelope.- j g V I Fig. '3 is a plan view of the front blank of theenvelope. 1 I Fig. 4 is a plan View of the rear blank from which the envelope is formed. v Referring to the drawings in detail, and particularly to Figs. 3 and 4, it will be seen that the envelope is constructed of two blanks. The blank indicated at A will be re- Fig. 1 1s a'pe'rspective" view'of the front} Fig. 2-isflaperspect1ve'viewofthe rear side ferred to as the front blank, and the blank indicated at B, as the rear blank. The front blank is',-'practically speaking, rectangularin shape, each side being providedflwith a foldable flap 2,- and oneen'd with a main flap 3, the use of which will hereinafter be described. The :flap 3 is adapted to be fol'dedjialong the line indicated at 4, and the flaps 2 along the lines indi-' cated at 5. The're'ar blank is similarly,

practically speaking, rectangular in form;

consisting of a rear section 6 and an enlarged end section 7, which is provided with side flaps 8; the blank as awhole being folded along the'lines indicated at 9' and 10. The two blanks illustrated may be formed in any manner desired, as by meansof dies or otherwise. They" maythen be assembled by 'ap plying adhesive along the flaps indicated. at

2 and 3, and also byapplying "adhesive to the flaps indicated at 8. and"alongjthe'edge indicated by the dotted line'12. With the adhesive applied, thefront blank is placed on top of the rear blank until the lower end of the front blank, indicated at 11, aligns with the folding line 10L The section '6 isthen folded over the frontise'ction and it is there secured by pasting down'the side flaps- 2 and finally one of the sideflaps orthat indicated at 8 the flaps 3 and. 8 being temporarily left open to permit insertion of the first and second class mail matter before mailing the same. In fact the envelope is completed when the two blanks have been assembled and'thefiaps 2 and 8 pasted in position. The envelope When completed has the appearance of an ordinary envelope, the only difference being that one main large compartment is formed between the sections Band A as indicatedat l3, whi'chmay be closed by the flap 3, and a second compartment, indicated at 14, is formed on' the front side of the envelope which may be closed by the flap 8. In other words the first class matter is placed in the compartment 14 and re- 'tained'therein by closing the flap 8, While the mail matter is inserted.

be formed With'a. minimum of Waste.

the catalogue is placed in the main compartment 13 and is enclosed by the-flap 3. Sep arate'postage for the first and second class matter may then be applied at thevpoints indicated at 15 and-16-and the envelopeis then ready for addressing and mailing or it may of course be addressed before This materially reduces time as only one envelope is addressed; itreduces'the quantity of paper required during the manufacture of theenvelope; it insures simultaneous mailing of the first and second class matter, and above all insures simultaneous delivery of thefirst and second class matter. v

The envelope here illustrated is ex'cedingly economical to manufacture as the blanks can The sections'of the envelope'can be quickly sembl'ed during the manufacture thereof by hand, machinery or otherwise. The final product obtained is a strong. durable envelope as the edgesare materially reinforced) fir'st by the flaps 2, and secondly by theflaps 8 and '8. as these are suflicientlylong to overlap the flaps 2 as illustrated in'Fi 2.

While certain features of the present invention are more or less specifically'illustrated, I Wish it understood that various changes in form and proportion may be resorted to Within the scope of the appended claims similarly that the materials and finish of the several parts employed may be such as the experience and judgmentof the manufacturer may dictate or varying uses may demand.

-.l-laving thus described my invention, What I- claim and "desire tosecure by Letters Patcut is:

1. An envelope of the character described haying a' comparatively large rectangular shaped compartment formed thereinfor the reception "ofprintedmatter less than first class, and a comparatively small rectangular shaped letter compartment formed on the front of thelarge'compartment andat the lowerend thereof,-a flap-on one'e-n-d of the envelop foldable over the rear thereof and adapted-to close the large compartment, and a flap formed on the side of the envelope and also foldable over the rear side thereof to form a closure for the small compartment.

extension of the upper end of the front blank,

an extension on the lower end of the rear blankadapted to befolded over the lower end of the'front blank to form a bottom for the large compartment and to form a compare} tively small compartment on the front of the'fi'ontblank, a pairof flap like extensions formed one on each side of the extension on th rear blank and foldable over the flaps formed on the front blank, one of said flaps adapted to be permanently pasted to close one end of the small compartment,-and the otherfl'ap adapted to be pasted when mail. matter -has-been'=placed in-the small compartment, the upper edge of said extension also adapted to be pasted to the front blank to close the upperportion of the small compartment.

An envelope of the character described comprising a front blank and a rear blank, a pair of longitudinally extending flaps formed onejon ea'c'h sideof the front blank and foldable over the sides of the rear blank and adapted to be pasted thereto to secure the-rear bl-ank,-a comparatively large rectangular shaped compartment formed between the front and rear blanks and adapted to be sealed at one end by a closing flap forming an extension of the'upper end of the front blank. an extension on the lower end of the rear blankadapted to be folded over the lower end of the front blank to form a bottom for the largecompartment and to form a comparatively small compartment on the front of the front blank, a pair of flap lik extensions formed one on each side of the extension on the rear'blank and foldable over the flaps formed on the front blank;

to overlap and reinforce the same.

ALAN D. FIELD. 

